
public class People {
    protected double weight, height;

    public void speakHello() {
        System.out.println("yayayaya");
    }

    public void averageHeight() {
        height = 173;
        System.out.println("average height:" + height);
    }

    public void averageWeight() {
        weight = 70;
        System.out.println("average weight:" + weight);
    }
    public void chinaGongfu() {
        System.out.println("坐如钟,站如松,睡如弓");
    }
}











